Patent Yard Sign in
Expired Canadian patentCanada

Lupus assay method and composition

CA 1201382 A · Owner: Liposome Corporation (The) · Inventors: Weiner Alan L.; Ostro, Marc J.; Weissmann, Gerald

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

An assay for detecting SLE antibodies utilizing a novel liposome composition in which there is entrapped a divalent cation responsive indicator. The presence of such antibodies is detected by their stabilization of the supermolecular structure of the liposomes. Such stalization can be detected, and in certain cases caused, by, the addition of magnesium or calcium ions.

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted March 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 25, 1983
GrantedMarch 4, 1986
Term endedMarch 4, 2003
Patent numberCA 1201382 A
Classification (IPC)G01N33/53 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 25, 1983Patent grantedMarch 4, 1986Term endedMarch 4, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.